[填空题]
“Room temperature” is of ;j ma65*h hbu.-9cfhyoi f -8jl-fhc 7gq*llvten taken to be 68°F. What is this on v254ak v, x .*bmsd h42vbstjqthe Celsius scale?kqa4s.b s4*vvm,2xt 2j5 bdvh $^{\circ} $ C
(b) The temperature of the filament in a lightbulb is about 1800 $^{\circ} $ C. What is this on the Fahrenheit scale? $^{\circ} $ F